This photo is linked from:

Discussion on SN6080

There has been a road bridge here since the openeing of Glanyrafon Business Park in the late 1970s. Prior to that there was just a ford and a footbridge across the river which served the farms south of the river and whose land was developed to form the Business Park.

The original road bridge was single track and as the Business Park expanded it became an increasing bottleneck. In the 1990s it was decided to widen the existing bridge to two lane width, but when work began it was found to be in such poor condition that a total rebuild was required.